The ProBoom® Ultima® Gen2 Ultima Low Profile Adjustable Mic Boom with a 12” fixed horizontal arm is a key building block in our modular mounting system for microphones and monitors. This single arm has a 29? overall reach and supports microphones (not included) with a 1-5lb weight rating. Arm includes specialized angle limiting adjustment which allows for locked rotation ranges, but this product includes no mount (base stud size 13mm).